Syed Ambon, Syed Ahmad Ezahar, et al. “Prestasi Kecergasan Daya Tahan Kardiovaskular Pemain Ragbi Agong Cup’s Negeri Kedah Darul Aman Berdasarkan Ujian Pacer 20-Meter Multistage Shuttle Run: Cardiovascular Endurancefitness Performance Among Kedah Rugby Agong Cup’s Players Based on 20-Meter Multistage Shuttle Run Pacer Test”.
Jurnal Sains Sukan & Pendidikan Jasmani, vol. 6, no. 2, Nov. 2017, pp. 55-64,
https://doi.org/10.37134/jsspj.vol6.2.6.2017.